Dot & Cross Diagrams (AQA A-Level Chemistry): Flashcards
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What do dot & cross diagrams represent?
What do dot & cross diagrams represent?
Electrons involved in bonding between atoms
What do dot & cross diagrams show?
What do dot & cross diagrams show?
Transfer or sharing of electrons in bonds
What type of electrons are shown in dot & cross diagrams?
What type of electrons are shown in dot & cross diagrams?
Valence electrons (outermost electrons)
How do electrons behave in covalent bonding?
How do electrons behave in covalent bonding?
Shared between atoms
How do electrons behave in ionic bonding?
How do electrons behave in ionic bonding?
Transferred from one atom to another
Why are dots & crosses used in these diagrams?
Why are dots & crosses used in these diagrams?
To differentiate electron sources from different atoms
What are dative covalent bonds?
What are dative covalent bonds?
Both electrons in bond provided by same atom
How are ions shown in dot & cross diagrams?
How are ions shown in dot & cross diagrams?
Square brackets around diagram with charge outside
How are lone pairs shown in dot & cross diagrams?
How are lone pairs shown in dot & cross diagrams?
Individual pairs of dots or crosses around atoms
What does an arrow show in a dative covalent bond diagram?
What does an arrow show in a dative covalent bond diagram?
Direction of bond, both electrons from same atom